.main {
  background: #FFF;
  width: 90%;
  margin: auto;
}

.student,
.course,
.teacher,
.student_total {
  width: 400px;
  height: 200px;
  margin: 16px;
  border: 1px solid #0000001f;
  border-radius: 4px;
  display: flex;
  background: #fff;
  padding: 25px;
}

.main_text {
  padding-left: 20px;
}

.main_text h4 {
  font-size: 20px;
}

.main_text h3 {
  font-size: 31px;
  line-height: 100px;
  color: cornflowerblue;
}

.main_text p {
  font-size: 14px;
}

.main_icon {
  width: 40%;
  padding: 1.4em 0;
  border-radius: 4px 0px 0px 4px;
  display: inline-block;
  text-align: center;
  background: #1aa094;
  line-height: 119px;
}

.main_icon h3 {
  font-size: 36px;
  color: #fff;
}

.header{
  text-align: start;
  align-items: center;
  padding: 10px;
  font-size: 18px;
  border: 2px solid gainsboro;
  border-radius: 5px;
  margin: 10px;
}